Wow Pete, I’m impressed….you’re also an ar-tist!
Are you using those super strong neodymium magnets?
Well Paul my mother was and amazing artist versed in many mediums. I a good art critic with basic skills. Thanks, and yes they are the large ones have 9 lbs of holding strength. But like I said they are entombed in a thick heavy duty plastic. Never had issues nor signs of corrosion/cracks.